Abstract: A water powered turbine (1) comprises a main support frame-work (2) which rotatably carries a rotor (3) comprising a main shaft (5) to which three blades (7) are attached by carrier discs (8) and (9). The carrier discs (8, 9) are rigidly secured to the main shaft (5), and the blades (7) are pivotally connected to the discs (8) and (9) by pivot shafts (16) and (17). Each blade (7) is of constant hydro-foil cross-section along its entire length and defines a first upper spiral (12) and a second lower spiral (13). The first spiral (12) extends from a first end (10) which is coupled to the main shaft (5) by the carrier disc (8), and the second spiral (13) of each blade (7) extends from a second end (11) of the blade (7) which is coupled to the main shaft (5) by the carrier disc (9). The first and second spirals (12) and (13) are of opposite hand and extend from the respective first and second ends (10, 11) to meet midway between the respective first and second ends (10, 11).

Abstract: A water powered turbine (1) comprises a main support frame-work (2) which rotatably carries a rotor (3) comprising a main shaft (5) to which three blades (7) are attached by carrier discs (8) and (9). The carrier discs (8, 9) are rigidly secured to the main shaft (5), and the blades (7) are pivotally connected to the discs (8) and (9) by pivot shafts (16) and (17). Each blade (7) is of constant hydro-foil cross-section along its entire length and defines a first upper spiral (12) and a second lower spiral (13). The first spiral (12) extends from a first end (10) which is coupled to the main shaft (5) by the carrier disc (8), and the second spiral (13) of each blade (7) extends from a second end (11) of the blade (7) which is coupled to the main shaft (5) by the carrier disc (9). The first and second spirals (12) and (13) are of opposite hand and extend from the respective first and second ends (10, 11) to meet midway between the respective first and second ends (10, 11).

Abstract: A shaft is provided with a low speed oscillating progressive drive by means of hydraulic cylinders which operate a lever mechanism which may be clutched to and declutched from, the shaft. A pneumatic control system senses the position of the pistons of the hydraulic cylinders and provides a controlled oscillation of the cylinders. When the pistons cause the shaft to rotate in one direction a sensor causes the lever mechanism to be declutched from the shaft after a selectable number of degrees of rotation. The pistons continue their stroke to the normal limit where the lever mechanism is caused to be once more clutched to the shaft. This operation is continued producing an oscillatory progressive rotation of the shaft.

Abstract: A counter-flow food chiller provided with an oscillating screw-feed so that the food, while being pushed through the chill tank in a direction contrary to the water flow is also agitated and oscillated, improving the heat exchange and preventing ice formation on the walls of the tank which are cooled by refrigeration.

Abstract: In a poultry processing conveyor system a plurality of evisceration lines are fed from a single kill line by means of a rotary hock cutter transfer carousel.